Walter Rosales

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BACKGROUND Borg Rating of Perceived Exertion Scale (RPE) is a psychophysiological measurements that translates physical stimuli to a psychological construct, which is perceived exertion. Its use is simple and it represents the effort perception. Each number of the scale is associated with a heart rate or percentage of maximal oxygen consumption (VO2max),(More)
To identify factors that determine long-term survival after resection of extrarectal colonic cancer, we analyzed 138 such patients operated upon in a five-year period. Because rectal tumors have lower survival rates, they were excluded hoping to enhance the prognostic accuracy of the study. The sigmoid colon was the most common location of the tumor (59%)(More)
The records of 242 patients, operated consecutively for biliary lithiasis, were analyzed to determine the reliability of oral cholecystography (OCG), ultrasonography (US), and HIDA in detecting biliary calculi. Preoperative interpretations were correlated to operative findings. OCG obtained in 138 patients was accurate in 92%. US obtained in 150 was correct(More)
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